But the students treated his feet, after his sponsored walk across the South Downs in Sussex.

Mr Fish was in a team with three men from Huddersfield, Mirfield and Leeds, called Footsore and Fancy Free.

They undertook Oxfam's Trailwalker Challenge in 26 hours. The maximum time allowed is 30 hours.

They raised £2,000 and some of the cash will go to the Gurkha Welfare Trust in Nepal.

Some Gurkha soldiers took part in the challenge - completing it in 11 hours.

Bad weather meant over a quarter of the 120 or so teams and 115 individuals dropped out.

Mr Fish said: "I felt as if I had webbed feet by the end of the walk. The physical element of the challenge is equivalent to running two-and-a-half marathons and climbing Ben Nevis - all without sleep. It takes months of training."